23a, High Street, Thame, OX9 2BZ
About 23a
23a is a three-bedroom semi-detached house in Thame (OX9 2BZ). It has a recorded floor area of 141 m² (around 1518 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (May 2025) shows an E (score 49), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since February 2014. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Very Poor. The recommended improvements would lift it to C (score 77), a 2-band jump.
Untraded for 21 years, with the last transfer in October 2005. At 141 m² the property is well over the postcode median (107 m² across 13 EPCs), placing it in the larger end of the local stock. Across 2005–2005, sale prices on this property compounded at 59.4% per year. Today's modelled estimate of £634,000 sits 65.8% above the 2005 sale of £382,500. On a £-per-square-foot basis, the last sale (£252/sq ft) was about 29.1% below the postcode norm. One historical planning record sits against the property in 2005. The record references listed-building consent, which constrain future alterations.
Know exactly what you're buying at 23a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms2
Energy performance
23a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
23a has a listed-building consent on record — alterations to a listed property are tightly controlled.
- Apr 2005RenovationHeritageIn report
Internal alterations. (As confirmed by block plan received on 30 March 2005 and letter received on 4 April 2005).
Listed- Documents
- 27 docs on file
- Reference
- P05/E0145/LB
We flagged 2 things worth checking at 23a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
- Recent ownership pattern worth a look
30-day money-back guarantee
Sales history & valuation
23a changed hands twice within eighteen months — unusual for the area.
£634,000
Modelled from EPC, postcode comparables and a sale-price growth of 59.4% per year over 1 year.
£382,500
Growth on file: 59.4% per year over 1 year.
Sales timeline
20 October 2005Most recent
£382,500
+59.4%23 June 2005
£240,000
Median price across the last 5 sales in OX9 2BZ: £455,000 (2024–2021).
Everything we know about 23a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
- Recent ownership pattern worth a look
Versus other High Street homes
On years held, 23a stands well clear of the street.
Price per m²
£2,713
Street avg £3,270
Floor Area
141 m²
Street avg 196 m²
Habitable Rooms
5 rooms
Street avg 7 rooms
CO₂ Emissions
8.5 t/year
Street avg 9.5 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Town Hall — bus stop.
Closest school
0.2 km
St Joseph's Catholic Primary School, Thame. 4 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
49.3dB
Night-time· 23:00 – 07:00
39.9dB